int
evdev_device_dispatch(struct evdev_device *device)
{
int fd = device->fd;
struct input_event ev[32];
int len;
/* If the compositor is repainting, this function is called only once
* per frame and we have to process all the events available on the
* fd, otherwise there will be input lag. */
do {
if (device->mtdev)
len = mtdev_get(device->mtdev, fd, ev,
ARRAY_LENGTH(ev)) *
sizeof (struct input_event);
else
len = read(fd, &ev, sizeof ev);
if (len < 0 || len % sizeof ev[0] != 0) {
if (len < 0 && errno != EAGAIN && errno != EINTR) {
device->base.device_interface->device_lost(
device->base.device_interface_data);
}
return 1;
}
evdev_process_events(device, ev, len / sizeof ev[0]);
} while (len > 0);
return 1;
}
static int
evdev_device_data(int fd, uint32_t mask, void *data)
{
struct weston_compositor *ec;
struct evdev_device *device = data;
struct input_event ev[32];
int len;
ec = device->seat->compositor;
if (!ec->focus)
return 1;
/* If the compositor is repainting, this function is called only once
* per frame and we have to process all the events available on the
* fd, otherwise there will be input lag. */
do {
if (device->mtdev)
len = mtdev_get(device->mtdev, fd, ev,
ARRAY_LENGTH(ev)) *
sizeof (struct input_event);
else
len = read(fd, &ev, sizeof ev);
if (len < 0 || len % sizeof ev[0] != 0) {
/* FIXME: call evdev_device_destroy when errno is ENODEV. */
return 1;
}
evdev_process_events(device, ev, len / sizeof ev[0]);
} while (len > 0);
return 1;
}